Can-head-seaming mechanism.



A. JOHNSON.

CAN HEAD SEAMING MECHANISM.

APPLICATION FILED DEC. 5,1910. 1,040,952. Patented Oct. 8, 1912.

2 SHEBTSSHEIJT l.

5. v if A. JOHNSGN. CAN HEAD SEAMING MECHANISM. APPLICATION rum) D1105,1910.

I Patented Oct. 8. 1912.

2 SHEETSSHEET 2.

UNITED STATES PATENT AXEL JOHNSON, 0F OAKLAND, CALIFORNIA,

FFICE.

ASSIGNOR TO AMERICAN CAN COMPANY,

A CORPORATION OF NEW JERSEY.

CAN -HEAD-SEAMING MECHANISM.

Specification of Letters Patent.

Application filed December 5, 1910. Serial No. 595,609.

Patented Oct. 8,1912.

Seaming Mechanism, of which the following is a specification.

The inventlon relates more partlcularly to an improved machine forseaming heads or covers to open ended cans containing paint or otherliquid preparations, wherein the filled can is required to be heldagainst rotation during the operation of seaming or applying the head orcover to the openend thereof.

The object of the invention is to provide a simple, effective anddurable machine for the described purpose, by means of which the filledcan to be headed may be properly adjusted and the head or coverpositioned end thereof by hand relative to the open prior to the seamingand properly clamped mechanism being thrown into action forantomatically seaming the head to the end thereof, the filled can duringthe seaming operation being held clamped against r0tation.

The machine comprises in cooperative combination a pair of verticallymovable can holder chucks, means for raising one of said chucks toproperly position the filled can and clamp a can head onto'the open endthereof, a pair of seaming rollers, and means for automatically placinginto. opera tion the said rollers for seaming a can head or cover ontothe open end ofthe clamped filled can.

To comprehend the invention reference should be had to the accompanyingsheets of drawings, wherein Figure 1 is a view in elevation partlysectioned of the improved machine, illustrating the upper can chuck inraised locked position" and the companion can chuck in adjustedposition, and the actuating connection for the spinning head carryingthe seaming rollers disconnected from the drive mechanism forimpartingrotation thereto. Fig. 2 is a detail elevation of the slidelock clutch and the slide lever for act ating the same, the lock clutchand the drive shaft on-which it is mounted being in section.

- Fig.3 is an enlarged detail broken elevation of the structuredisclosed by Fig. 1 of the drawings, the upper portionof the frame andcertain of the operative parts being in section, said view illustratingthe upper can chuck as released from its raised locked posit-ion.

In the drawings, the numeral 1 is used to' designate any suitable formof a support ing frame structure, which in the present case, pal-takesof the nature of a hollow standard carrying at its upper end aninclosing housing 2 for the drive' mechanism, from said housing beingextended a bracket 3 which supports a vertically extended shell 4carrying a housing 5. Through the housing 2 is extended ahorizontallydisposed drive shaft 6 driven by a belt pulley 7, and on said shaft isloosely mounted a worm 8 carrying a clutch head 9, which is engaged bythe slide clutch l0 feathered to the drive shaft 6. The drive shaft 6 isextended within the housin 5 and on such end is secured a gear 11,which, as hereinafter explained, transmits the mo tion of the driveshaft6 to the spinning head carrying the seaming rollers. The worm 8 mesheswith the worm gear 12 mounted within the housing 2. In one face of thesaid 13, Within which works an anti-friction roller 14- secured to theinner end of a fulcrumed lever 15 extended within the said housing. Fromthe opposite face of the gear 12 projects a pin or short stud 16 whichacts'against an arm 17 pivoted to lever 18 slidably mounted on a crossrod 19' and normally held inwardly pressed by the action of a coiledspring :20. The upper end of the slide lever 18 is forked to straddlethe grooved hub of the slide clutch 10, for forcing or placing the sameinto locked engagement with-the clutch he 1d 9 of the worm 8 in order totransmit thereto for driving the worm gear 12 the motiorrof the driveshaft 6, when the pivoted arm 17 is moved out of engagement with thelocking stud 16.

From the arm 17 depends a connecting rod 21, which is normally helddownwardly pressed by the action of the coiled spring 22 surrounding thesame and which bears against a'collar 23 thereon and the under face ofthe head of the frame standard 1. To the lower end of the rod 21 ispivoted the end of the angle extension 24: of the fulgear is formed acam groove ing roller levers 80 and 30 crumed hand operated lever 25,which is pivoted within the frame 1 and extended-oeyond the same.

Through the vertical shell 41 is extended a'rotary sleeve 26, which atits upper end carries a gear 26 in mesh with the driving gear 11 of thedrive shaft (3, and to the lower end of said sleeve is secured theseaming head 27, which head is furnished with a set of seaming rollers,consisting of a forming roller 28 and a seam closing roller 28. .Qhesaid rollers are ournaled directly 1 1 'J to tea slides 29-woru1ngwithin the seammg head 27, and the seaming roller slides are moved inand out to operate the seaming rollers by means or" the seamfijilcrumedby pins 30 on the seaming roller head 27 furni hed with anti-frictionrollers 31 for engagement with the came 32 or on the cam collar 33 whichsurrounds and is slidably mounted on the lower end portion of the sleeve26. The said cam collar is reciprocated required to successively operatethe seaming rollers 28 and 28 by means of the fulcrumed lever 15, havinga forked or yoked end which engages the circumferentially groovedportion 83 of the cam collar 33.

Through the seaming head 27 and sleeve 26 is extended the verticallymovable plunger rod 34%, normally held downwardly pressed by the spring34. To the lower end of the said plunger rod is secured the can chuck35, which cooperates with the opposing or lower can chuck 35 for theclamping of a filled can with a loosely applied head thereloetween.

The stem 36 of the chuck 35 extends through a guide 86 of a bracket 87,and the lower end thereof is connected by the rod 38 to a foot-treadle39, the normal position of said rod and treadle being indicated bydotted lines in Fig. 1 of the drawings.

The plunger rod 34; is held locked in its raisedposition by means of thelook-rod. 4:0, which works through the housing 5 and moves intoengagement with the seat 10 in the upper end portion of the rod 3%, thesaid lock rod 10 being pivoted to the upper end of a short fulcrumedlever 41, pivoted at its lower end to the upper end of the slide lever18.

The filled can 42 is placed on the chuck 35 and the cover 'or head 12loosely aplied thereto, the operator depressing the foot treadle 39 toslowly raise thechuck 35 and gradually forcing the can with its looselyapplied head against the chuck 35, ample time being thus given theoperator in which to properly position the can head or cover. As'thepressure on the foot treadle is continued the plunger rod 3 1 is forcedupwardly its full distance and so held by the operator, when the handleor lever 25 israised to lower the connecting rod 21 and depress the arm17 from within the sphere or the stud 16, which movement of the armllshii'ts the position of the slide lever 18 p to force the lock rod 10into engagement with the plunger 3% and to throw the clutch 10 intoei'xgagement with the clutch head 9. It will he noticed that the clutchhead 10 is not shifted for engagement with the clutch head 9 until thelock-rod 10 has moved into engagement with the seat 10 of the plunger341-. The moment the clutch 10 moves into locked engagement with theclutch head 9, the rotary motion of the drive shaft 6 is imparted to theworm 8 and by the same transmitted to the gear 12, During the firstportion of: its revolution, the roller 14 of the lever 15 moves intosuch portion of the cam groove 18 as to throw upwardly the outer end ofthe lever 15 lifting the cam collar 83, which carrying therewith the cam32 actuates the roll 31 to throw the lever 30 for forcing inwardly thehanging roller 28 of the spinning or seaming head 27, after which theroller 14-- is carried intosuch portion of the cam groove 13 as to forcedownwardly the said cam collar 33, causing the roll 31 to ride on thecam surface 32 and through its connection with roller 28 force the sameinwardly to scam the flanged can head or cover onto the flanged end ofthe clamped can It will be understood that the lever 25 is released themoment the arm 17 has been thrown, when the pressure of the spring 22exerts itseli and draws downwardly the rod 21 ind places the arm 17within the path of the stud 16, which as the gear 12 complates itsrevolution hears againstthe end of arm iorces it outwardly, the movementof which forces over the slide lever 18 to withdraw the clutch 10 fromon gagement with the clutch head 9 andat the same time shifting thefulcrumecl lever 11 to withdraw the lock rod 10 vfrom engagement withthe plunger rod 34:. By this time the lever 15 will have been actuatedto raise the cam collar 33 for placing the seaming roller 28 out ofengagement with the flange of the can head or cover, when foot pressurebeing released .from the treadle 39 the pressure of the retained spring34 forces downwardly the can chucks 35 and 35, taking the headed canfrom within. the sphere of the seaming rollers.

It will be understood that the 6 is a continuously rota-ting hue andthat the seaming head 27, through its direct con-. nection therewithfislikewise a continuously rotating one.

thus is claim as new and desired to protected Letters Patent is- In amachine for the described purpose, the combination with'a seaming headprodrive shaft described the invention what i Yided with axially movablel'orming andt seaming rollers, of a spring actuated can, chuck normallyheld below the rollers ol the seaming head, a second can chuck spaced adistance below the upper can chuck tor supporting a can to ha re a headseamed thereto, means for raising the lower check to clamp a can betweenthe chucks, and raise the upper spring held chuck, drive means forimparting continuous rotation to the scaming head, a Slidable cam collaracting against the rollers of the sean'ung head, actuating mechanism forraising and lowering saitl collar for successively placing the formingroller and the seaming roller into and out i l l l l l l i head toheseamed onto the clamped can,

and a lock device for holding the upper canehuck in raised ponitionduring the seaming operation and the actuating mechanism for the camcollar against movement, until the said can chuck is properlypositioned.

1n testimony whereof I have signed my name to this sptmitication in thepresence of two subscribing Witnesses.

AXEL JOHNSON.

Witnesses N. A. Acnnn, D. B. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

